Design and laser damage properties of a dichroic beam combiner coating for 22.5-deg incidence and S polarization with high transmission at 527 nm and high reflection at 1054 nm
Abstract
We designed a dichroic beam combiner coating with 11 HfO2/SiO2 layer pairs and deposited it on a large substrate. It provides high transmission (HT) at 527 nm and high reflection (HR) at 1054 nm for a 22.5-deg angle of incidence (AOI), S polarization (Spol), and uses near half-wave layer thicknesses for HT at 527 nm, modified for HR at 1054 nm. The two options for the beam combiner each require that a high intensity beam be incident on the coating from within the substrate (from glass). We analyze the laser-induced damage threshold (LIDT) differences between the two options in terms of the 527- and 1054-nm E-field behaviors for air → coating and glass → coating incidences. This indicates that LIDTs should be higher for air → coating than for glass → coating incidence. LIDT tests at the use AOI, Spol with ns pulses at 532 and 1064 nm confirm this, with glass → coating LIDTs about half that of air → coating LIDTs. Lastly, these results clearly indicate that the best beam combiner option is for the high intensity 527 and 1054 nm beams to be incident on the coating from air and glass, respectively.
- Authors:
-
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1340515
- Report Number(s):
- SAND-2016-9287J
Journal ID: ISSN 0091-3286; 647550
- Grant/Contract Number:
- AC04-94AL85000
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Optical Engineering
- Additional Journal Information:
- Journal Volume: 56; Journal Issue: 1; Journal ID: ISSN 0091-3286
- Publisher:
- SPIE
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; 36 MATERIALS SCIENCE; laser damage; dichroic optical coatings; laser beam combining coatings; coatings on large optics
Citation Formats
Bellum, John C., Field, Ella S., Kletecka, Damon E., Rambo, Patrick K., and Smith, Ian C. Design and laser damage properties of a dichroic beam combiner coating for 22.5-deg incidence and S polarization with high transmission at 527 nm and high reflection at 1054 nm. United States: N. p., 2016.
Web. doi:10.1117/1.oe.56.1.011020.
Bellum, John C., Field, Ella S., Kletecka, Damon E., Rambo, Patrick K., & Smith, Ian C. Design and laser damage properties of a dichroic beam combiner coating for 22.5-deg incidence and S polarization with high transmission at 527 nm and high reflection at 1054 nm. United States. https://doi.org/10.1117/1.oe.56.1.011020
Bellum, John C., Field, Ella S., Kletecka, Damon E., Rambo, Patrick K., and Smith, Ian C. Wed .
"Design and laser damage properties of a dichroic beam combiner coating for 22.5-deg incidence and S polarization with high transmission at 527 nm and high reflection at 1054 nm". United States. https://doi.org/10.1117/1.oe.56.1.011020. https://www.osti.gov/servlets/purl/1340515.
@article{osti_1340515,
title = {Design and laser damage properties of a dichroic beam combiner coating for 22.5-deg incidence and S polarization with high transmission at 527 nm and high reflection at 1054 nm},
author = {Bellum, John C. and Field, Ella S. and Kletecka, Damon E. and Rambo, Patrick K. and Smith, Ian C.},
abstractNote = {We designed a dichroic beam combiner coating with 11 HfO2/SiO2 layer pairs and deposited it on a large substrate. It provides high transmission (HT) at 527 nm and high reflection (HR) at 1054 nm for a 22.5-deg angle of incidence (AOI), S polarization (Spol), and uses near half-wave layer thicknesses for HT at 527 nm, modified for HR at 1054 nm. The two options for the beam combiner each require that a high intensity beam be incident on the coating from within the substrate (from glass). We analyze the laser-induced damage threshold (LIDT) differences between the two options in terms of the 527- and 1054-nm E-field behaviors for air → coating and glass → coating incidences. This indicates that LIDTs should be higher for air → coating than for glass → coating incidence. LIDT tests at the use AOI, Spol with ns pulses at 532 and 1064 nm confirm this, with glass → coating LIDTs about half that of air → coating LIDTs. Lastly, these results clearly indicate that the best beam combiner option is for the high intensity 527 and 1054 nm beams to be incident on the coating from air and glass, respectively.},
doi = {10.1117/1.oe.56.1.011020},
journal = {Optical Engineering},
number = 1,
volume = 56,
place = {United States},
year = {Wed Oct 12 00:00:00 EDT 2016},
month = {Wed Oct 12 00:00:00 EDT 2016}
}
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